text: /* { dg-require-effective-target vect_int } */
  
  #include <stdarg.h>
  #include "tree-vect.h"
  
  #define N 16
  unsigned char udata_ch[N] =
    { 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 };
  #define SUM 210
  
  __attribute__ ((noinline)) int
  foo ()
  {
    int i;
    unsigned short shortsum = 0;
  
    /* widenning sum: sum chars into short.  */
    for (i = 0; i < N; i++)
      {
        shortsum += udata_ch[i];
      }
  
    /* check results:  */
    if (shortsum != SUM)
      abort ();
  
    return 0;
  }
  
  int
  main (void)
  {
    check_vect ();
    return foo ();
  }
  
  /* { dg-final { scan-tree-dump "vect_recog_widen_sum_pattern: detected" "vect" } } */
  /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_widen_sum_qi_to_hi } } } */
  /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { target { ! vect_widen_sum_qi_to_hi } } } } */
  